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Integration of on-chip field-effect transistor switches with dopantless Si/SiGe quantum dots for high-throughput testing
Open accessAbstract
Measuring multiple quantum devices on a single chip increases characterization throughput and enables testing of device repeatability, process yield, and systematic variations in device design. We present a method that uses on-chip field-effect transistor switches to enable multiplexed cryogenic measurements of double quantum dot Si/SiGe devices. Multiplexing enables the characterization of a number of devices that scales exponentially with the number of external wires, a key capability given the significant constraints on cryostat wiring. Using this approach, we characterize three quantum-point contact channels and compare threshold voltages for accumulation and pinch-off voltages during a single cool-down of a dilution refrigerator.
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Device multiplexing using on-chip or off-chip circuitry comes with limitations in the wafer area that can be sampled.
“One solution is device multiplexing, using either on-chip31,32 or off-chip33 circuitry, but both approaches come with limitations in the wafer area that can be sampled.”
From Probing single electrons across 300-mm spin qubit wafers (2024) · cites this paper as [31]
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Metadata
- Authors
- Ward, D. R., Savage, D. E., Lagally, M. G., Coppersmith, S. N., & Eriksson, M. A.
- Affiliations
- University of Wisconsin–Madison (US)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2013-05-27
- Volume
- 102
- Issue
- 21
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2086519394
- Cited by
- 43
- References
- 20
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 5 · 2023: 4 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 5 · 2015: 9 · 2014: 3 · 2013: 2
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Applied Physics Letters (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Quantum and electron transport phenomena
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Semiconductor Devices and Circuit Design
- Keywords
- Si/SiGe quantum dots, double quantum dot, quantum point contacts, threshold voltage, pinch-off voltage, dilution refrigerator
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